<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html lang="en">
<head>
	<meta http-equiv="Content-Type" content="text/html;charset=UTF-8">
	<title>Document</title>
</head>
<body>
	<?php 

		$num1 = $_GET['num1'];
		$fuhao = $_GET['fuhao'];
		$num2 = $_GET['num2'];
		$num3 =$num1+$num2;
		echo'$num3';

	?>

	<form action="" method="get">
		<input type="text" name="num1">;
		<!-- <input type="text" name="fuhao">; -->
		<input type="text" name="num2">;
		<!-- <input type="submit" value="计算"> -->
	</form>
	
</body>
</html>